Quarterly report pursuant to Section 13 or 15(d)

Stock Options and Long Term Incentive Plan - Roll Forward (Details)

v2.4.0.8
Stock Options and Long Term Incentive Plan - Roll Forward (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Before the Conversion [Member] [Domain]
Sep. 30, 2013
After the Conversion [Member]
Sep. 30, 2013
Liberty Media [Member]
After the Conversion [Member]
Sep. 30, 2013
Restricted Stock [Member]
Sep. 30, 2013
Restricted Stock [Member]
Liberty Media [Member]
After the Conversion [Member]
Sep. 30, 2013
Series A
Sep. 30, 2012
Series A
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]                
Outstanding, Beginning   1,615,711   3,411,519 304,022 1,279,663    
LMC Spin-Off adjustment to existing stock options 7,589,815              
LMC Spin-Off adjustment for Liberty Media employees 3,527,791              
Granted     6,030,106          
Exercised     (648,786)          
Forfeited     (272,691)         (6,480)
Expired/cancelled     0          
Outstanding, Ending   1,615,711   3,411,519 304,022 1,279,663    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]                
Weighted Average Exercise Price, outstanding beginning   $ 93.14            
Weighted Average Exercise Price, Granted, Spin-Off Liberty Media employees Option Adjustment to Weighted Average Exercise Price $ 12.78              
Weighted Average Exercise Price, Granted     $ 18.93          
Weighted Average Exercise Price, Exercised     $ 10.95          
Weighted Average Exercise Price, Forfeited     $ 11.09          
Weighted Average Exercise Price, Expired/cancelled     $ 0.00          
Weighted Average Exercise Price, outstanding ending   $ 93.14 $ 14.35          
Weighted Average Exercise Price, LMC Spin-Off adjustment for Liberty Media employees $ 11.62              
Exercisable 3,509,674              
Exercisable, Weighted Average Exercise Price $ 12.26              
Weighted Average Remaining Contractual Term of Outstanding Options 6 years 2 months 14 days              
Options Exercisable, Weighted Average Remaining Contractual Term 4 years 4 months 26 days              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value     $ 245.8          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value     $ 55.7          
Common Stock, Capital Shares Reserved for Future Issuance             17,841,946